Haiti has temporarily revoked Oxfam's authorization to operate in the Caribbean country after allegations of sexual misconduct by some of the British charity's staff there, Planning and External Cooperation Minister Aviol Fleurant said on Thursday.

At least 13 people on the ground, including three children, were killed when a Mexican military helicopter carrying top officials surveying damage from an earthquake crashed in a small town in the southern state of Oaxaca, authorities said on Saturday.

Brazil's government will declare an emergency in its northern border state of Roraima to boost funding and troops to help control an influx of Venezuelan refugees into the country, Defense Minister Raul Jungmann said on Wednesday.

The UN's highest court drew new maritime boundaries between Costa Rica and Nicaragua on Friday seeking to end a decades-long frontier dispute, and ordered Managua to pay compensation for environmental damage.

The Trump administration on Tuesday ordered the expulsion of 15 Cuban diplomats after pulling more than half of its own embassy staff out of Havana last week, further escalating tensions between the United States and Cuba.

Desperate rescue workers scrabbled through rubble in a floodlit search on Wednesday for dozens of children feared buried under a Mexico City school, one of hundreds of buildings wrecked by the country's most lethal earthquake in a generation.